<div class="row my-index">
  <div class="col-sm-6 col-md-4 index1">
    <div class="thumbnail">
      <img src="../assets/img/index1.png" alt="">
      <div class="caption text-center">
        <h3>创建空白问卷</h3>
        <h4>从一份空白问卷开始创建</h4>
        <p>
          <a href="#" class="startbtn" role="button">开始</a>
        </p>
      </div>
    </div>
  </div>
  <div class="col-sm-6 col-md-4 index2">
    <div class="thumbnail th2">
      <img src="../assets/img/index2.png" alt="">
      <div class="caption text-center">
        <h3>选择问卷模板</h3>
        <h4>使用腾讯问卷提供的专业模板</h4>
        <p>
          <a [routerLink] = "['choicequestion']" class="startbtn" role="button">开始</a>
        </p>
      </div>
    </div>
  </div>
  <div class="col-sm-6 col-md-4 index3">
    <div class="thumbnail th3">
      <img src="../assets/img/index3.png" alt="">
      <div class="caption text-center">
        <h3>文本编辑问卷</h3>
        <h4>自由编辑文本自动生成问卷</h4>
        <p>
          <a href="#" class="startbtn" role="button">开始</a>
        </p>
      </div>
    </div>
  </div>
  </div>

